Battery light



Dec. 6, 192 7.

E. ST. JOHN BATTERY. LIGH T Filed Feb.8. 1926 v IN VEN TOR L ZiTORNE Y Patented Dec. 6, 1927.

VUNITEDFES'TATES PATENT OFFICE. I

EVERETT ST. Joan, E BROOKLYN, NEW YORK, ASSIGNOB To axEmcAn TELEPHONE 1 Ann TELEGRAPH COMPANY, A CORPORATION 01 NEW YORK.

BATTERY LIGHT.

Application filed February 8, 1826. Serial No. 86,903.

through the slot 21 in the head portion of i This invention relates to battery lights, and more particularly to switching arrangements in such lights for closing and opening the electric circuit. v

In battery lights provided with switch control means secured to. the side of the battery case, it is necessary, if the ordinary. type of circuit is used, that the reflector and numerous connections beinsulated from the casing. This requirement gives rise to various chances of circuit trouble due to faulty insulation.

It is the object ofapplicants invention to provide'such an arrangement of the circuit and the switching means that the number of insulated parts is reduced to the minimum. I p

Applicants invent-ion will be clearly understood when the following detailed description of one desirable embodiment thereof is read with reference to the accompany ing drawing; Figure 1 of the drawing is a sectional View of applicants battery light taken in a lateral direction; Fig. 2 is a sectional view of the head portion of the light taken on the line 22 of Fig.. 1; Fig. 3 is a sectional view of the head taken on the line 3-3 of Fig. 2; and Fig. 4 shows a side elevation of the head portion.

With reference to the detailsof'the drawing, th'e case of the battery light includes the battery case portion 5 and the head portion 6, both constructed of metal. The portion 5 is threaded at its'upper end to receive the head portion 6 and atits lower end to receivethe screw cap 7. The head ortion 6 is so constructed as to carry rlvete to it an extension member 8 which is internally threaded to receive the externally threaded lens cap 9. In the head of the light thereis mounted the lamp 10 with filament 11 base member 12 and contact tip 13. The reiiector 14 is held in position by the supporting ring 15 of brass or other suitable metal. The battery cells 16 and 17 are mounted in the usual position in the battery case 5 and are forced upward by the sprin 18 mounted in the screw cap 7. A switc lever 19 constructed of hard fibre or other suitable insulating material is pivoted at one end at 20; the other end of this lever extends the battery case, so located that the switch may be conveniently operated with the thumb. The switchlever 19 carriesriveted to it the spring brass contact strip 22, the upper end of which makes contact with the lamp tip 13 at all times. The contact button 23 is mounted near the base of the head portion on the brass strip 24, and is insulated from this strip by the fibre members and 26. This button 23 makes contact with the upper end of the battery cell 16, and this,

contact is maintained by the upward pres-' sure of the spring 18. The switch lever 19 maybe thrown up or down in the slot 21,

and a notch is provided at each end of the slot, the lever being forced into one of these notches upon operation by the action of the spring contact strip 22. With the lever 19 in the uppernotch-of the slot, the circuit is broken between the contact strip 22 and the contact button 23. When the switch lever is thrown down,=it forces the lower end of the contact strip 22 down intorcontactwith the button 23. There is thus n'nected the following circuit: upper cell 16, lower cell 17, spring 18, screw cap 7, battery casing 5,

reflector 14, base member 12, filament 11, contact tip 13, contact strip 22 and contact button 23.

It is clear from the above description that applicants circuit and switching arrangements permit a reduction in the number of insulated parts as compared with the ordinary battery light having the switch control on theside of the battery case.

-While applicants invention has been described in one particular embodiment, which is deemed desirable, it is to be understood tact at one end thereof with said lamp in contact strip into contact with the insulated any position of said strip, and a lever of contact button, completing the electric cir- 10 insulating material fixed to said strip, said cult. v

lever being pivoted at one end, havin its In testimony whereof, I have signed my free end projecting through a longitu inal name to this specification this 6th day of slot in the casing member, and being so posi- February, 1926.

tioned that when it is operated from one end of saidslot to the other end it forcesthe EVERETT ST. JOHN. 

